<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        .box{
            width: 200px;
            height: 200px;
            background-color: pink;
            border: 2px solid green; 
            padding: 10px;
            margin: 20px;
        }
        ul>li{
            width: 100px;
            height: 100px;
            background-color: aqua;
            margin: 10px;
            border: 2px solid pink;
        }
        p{
            width: 100px;
            height: 100px;
            background-color: pink;
            margin: 10px;
            border: 2px solid aqua;
        }
    </style>
</head>

<body>
    <h1>h1</h1>
    <div class="box">div1</div>
    <div class="box">div2</div>
    <ul>
        <li>周树人</li>
        <li>CSGO</li>
    </ul>
    <p>
        p
    </p>
</body>

</html>